Recovery efs imei. EFS on Qualcomm devices, backup, recovery. Saving IMEI on Samsung Galaxy series phones
EFS on Qualcomm devices, backup, recovery
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This instruction is devoted to how to use the program " QFIL"implement backup "EFS"on PC, as well as the process of restoring a backup copy" EFS" to device: " Lenovo based on Qualcomm".
Preparation
- Follow the instructions: .
- Open the folder of the installed software package" QPST", and run " QFIL.exe".
- Make sure that the program has detected the device in the mode: " Lenovo HS-USB Diagnostics".
- In the top menu of the program " QFIL" choose " Tools" -> "QCN Backup Restore".
Creating an EFS Backup
Backup QCN" and wait for the backup process to complete. By default, the backup is (file 00000000.qcn) will be saved in the folder " C:\temp\", it is better not to change the location for saving and the name of the backup copy. If the device is a dual-SIM device, then check the "Enable Multi-SIM" option. Backup " EFS"It is advisable to copy it to a couple of safe places.
Log of a successfully created backup:
Process Index:0 Start Download QCN COM Port number:7 Checking if phone is connected... IsPhoneConnected: Passed. Phone is connected Sent SPC code to the phone successfully Downloading QCN file: C:\temp\00000000.qcn Done downloading the qcn file: C:\temp\00000000.qcn Finish Backup QCN
Restoring EFS from a backup
In the window that opens, click on the button " Browse", specify the path to the file " 00000000.qcn" and press " Open". If the device is dual-SIM, then check the "Enable Multi-SIM" option.
Click on the " Restore QCN" and wait for the recovery process to complete.
Log of a successfully restored backup
Process Index:0 Start Restore QCN COM Port number:7 Uploading QCN file: C:\temp\00000000.qcn Checking if phone is connected... Done uploading the QCN file: C:\temp\00000000.qcn Finish Restore QCN
A smartphone without connection to an operator, what could be worse? Without communication, we just get a player with the function of playing music, video and other little things. Communication is the soul of a smartphone; that’s what it was created for. There may be several reasons for the lack of communication with the operator: problems on the part of the operator, the SIM card needs to be replaced, a hardware defect in the smartphone, etc.
But there is another reason when the phone does not catch the network - the lack of your phone IMEI(International Mobile Equipment Identity). IMEI and cellular are closely intertwined and therefore the vast majority of phones from major manufacturers have IMEI. There are Chinese phones for two/three/ten SIM cards that somehow work without IMEI, but if you have a smartphone from a large manufacturer, it will not register on the network without the correct IMEI.
If we talk in simple language, then losing IMEI is your smartphone's worst nightmare. And as practice shows, with Samsung phones this happens much more often than with other manufacturers. In fact, the IMEI of Galaxy series smartphones is stored in a separate section - EFS in the root of the flash memory. Sometimes, according to various reasons, this partition is erased or the data in it is damaged. As a result, your phone does not have an IMEI and cannot register on the network.
Reasons for missing IMEI:
- Firmware update via OTA or other method
- Installation official firmware(yes, yes, official)
- Installing third-party firmware
Saving IMEI on Samsung Galaxy series phones
- You must have access to phoneutil menu. The default is *#7284# . If this code does not fit, then you need to find the appropriate one for your model. All necessary drivers for the phone must also be installed.
- Download NV-Items_Reader_Writer_Tool.zip - 2.43 MB
- Enable USB debugging on your phone.
- We are recruiting *#7284# .
- Let's go to Qualcomm USB Settings and choose RMNET + DM + MODEM.
- Now we connect the phone to the computer, run NV-items_reader_writer.exe as administrator.
- Save the block Range (Dec) 550-550. The block must be preserved 00550 . This will be yours IMEI.
- We are recruiting *#7284# . Let's go to Qualcomm USB Settings and choose MTP+ADB.
- Ready:)
Repairing IMEI on Samsung Galaxy series phones
- Find IMEI your phone, for example by battery.
- Create a backup block with IMEI according to the instructions above, even if it is damaged. And open it with the editor NotePad++.
- Divide your name into blocks of two numbers, leaving the first number separately. For example 35516705558781901 divide by 3 55 16 70 55 58 78 19 01
- Adding Latin A after the first digit, and swap all the rest. Add 08 to the begining IMEI. We get the following 08 3A 55 61 07 55 85 87 91 10
- Now in text editor NotePad++(we already opened this file earlier) replace the first nine blocks with our correct one IMEI, which we received in the last step.
- Let's write it down IMEI back to phone button Write V NV-items_reader_writer.
- Reboot the phone.
The /efs folder contains the smartphone's IMEI, which is part of the system that identifies the phone and the network it connects to. From time to time they are deleted due to various wipes and/or installations custom firmware. If you want the /efs directory not to be deleted, you need to save it as a backup copy. For Samsung Galaxy S3 it is now very easy to do backup copy/efs folder using a tool suggested by XDA developer.
EFS Backup/Restore is a very simple tool that can be used from your computer. This is an executable script that extracts data from the EFS phone and saves it on the computer as an image file. If you need it later, you can restore it using a similar script. When restoring, make sure that the image file is in the same folder as the other files.
This method works flawlessly. If you use it, you can test various firmware practically without risk. If you encounter an error, you will need to install new version adb. This is the case if you have not updated the program in advance.
This instruction will show you how to make a backup copy of Galaxy S3 EMEI and /efs folders.
Warning!
These instructions are for use with the Galaxy S3 and its variants only. If you use these instructions with other smartphones, this can lead to the most undesirable results.
The information contained in this manual is intended for reference purposes and for educational purposes only. There are no guarantees that these instructions will work with your smartphone or in your specific situation.
You use these instructions at your own risk. We are not responsible for anything that may happen to your smartphone as a result of using the information in this guide.
Please read and understand the manual before actually following the instructions.
Technical requirements:
- Get root rights to Samsung Galaxy S3 in any way:
1. .
2. . - A computer with Windows and WinRAR, 7-Zip or similar archiver installed.
- Installed USB drivers. They are usually installed along with .
- Download the EFS Backup/Restore tool for Galaxy S3 on your computer.
- Make sure you have recharged Galaxy battery S3 up to 70%, otherwise there is a chance of the procedure being interrupted.
- Make a backup copy of all contacts, SMS, mms, Internet settings, wifi passwords, because such data may be lost after the procedure. We recommend synchronizing with a cloud service or creating a local copy of your mobile data.
Instructions:
- 1. Open RAR file and extract its contents to a folder.
- 2. On Galaxy S3, enable “USB debugging” in Settings > Developer Options > USB debugging.
- 3. Connect your smartphone to your computer.
- 4.
On your computer, go to the folder with the unzipped data and double-click to run the BAT script:
- To create a backup of /efs, run Backup_EFS.bat. The script will create a saved backup file in the same folder named efs.img.
- To restore from a /efs backup, run the Restore_EFS.bat script. Please check in advance that the efs.img file is also located in the same folder.
Congratulations! You have just made an EFS backup of your Samsung Galaxy S3 data using a backup and restore tool.
This article is about recovery
encrypted file system (efs) performance, import
keys from the old user profile in
new system for gaining access to
encrypted information. To start
let's decide what you can do first
try a number of existing utilities for
this work, the work performed in the article
requires certain knowledge and skills.
- Our favorite elcomsoft offers advanced
efs data recovery for 2K/XP for $99 with
demo version available. - Our beloved Microsoft also has in its
arsenal recovery program
reccerts.exe, which can be obtained via
paid support service. - Well, unknown to us, Passware offers efskey,
which is said to be slower
aefsdr, but costs exactly the same - 95 conventional
raccoons
Let's return to our sheep. By default names
efs in XP are colored green. If everything fails
keys are naturally lost, and when opened
file creates a blank document with
description of the error. For example:
- notepad: cannot open the c:\documents and settings\foo\my
documents\report.txt - file: make sure a disk is in the drive you specified.
- wordpad: access to c:\docume~1\foo\mydocu~1\report.txt was denied.
This error usually appears
indicates that for everyone
users who had access to the file,
The wrong encryption key is being used.
There may be several reasons for this -
the most common is reinstallation
systems.
Everyone is recommended before the first
using efs to export
public and private keys, and
preferably on another medium (cipher /?) - these
keys are randomly generated upon creation and
when reinstalling the system
naturally do not repeat. Surprisingly,
maybe on purpose, at the first
no warnings when using efs
valiant Microsoft does not give out and there is a real
completely forget about the danger.
In 2K and XP, data on efs is here:
c:\documents and settings\user\application data\microsoft\crypto\ —
private key
c:\documents and settings\user\application data\microsoft\protect\ —
password entry to the private key
c:\documents and settings\user\application data\microsoft\systemcertificates\ —
public key. In general, not so
important.
Let's say the files have been saved and you need them
use. To work with file
the system requires the same account with the same
computer number, which is what it was originally.
You can find this data here:
c:\documents and settings\%username%\application data\microsoft\crypto\rsa\s-1-5-21-1078081533-
1606980848-854245398-1003
Computer number: 1078081533-1606980848-854245398
User number: 1003
In hex, respectively: fd374240 f094c85f 16c0ea32 and 3eb.
Go to hklm\sam\sam\domains\account\users\%usernumbers% and
check if there is an account with the same number in
system. If there is, then you need to find the name
user and create a profile with
original password. If it doesn’t exist, we create it,
having previously changed hklm\sam\sam\domains\account\f to
offset 48 to the required number, and add
him to the admin group. Next: in
hklm\sam\sam\domains\builtin\aliases\00000220\c change the machine SID
to the original one. We do the following and
here: hklm\sam\sam\domains\account\v. From hklm\software\microsoft\windows
nt\currentversion\profilelist\ export the key,
describing the car number with the suffix of
user numbers, change to
original numbers and import them back.
Copy the folders with keys to c:\documents and
settings\%username%\application data\microsoft\, reboot...
and everything should work.
In the next part we will look at the situation
in which there are no key files.
Every time you decide to update your Samsung Galaxy S3 with custom firmware, you may end up losing the data that is stored in internal memory. Unfortunately, not only regular data such as contacts, messages, call logs or applications can be destroyed, but also Internet settings or the EFS folder can be erased too. So, to avoid any unpleasant situations, we will teach you how to do EFS backup and restore on Samsung Galaxy S3 using one-click method. As usual, it's all explained in a simple step-by-step guide, so let's get started.
Why do you need to backup EFS? EFS stores the IMEI and allows the phone to establish an internet connection, so in case this folder is erased, the phone will no longer be able to use the internet connection. So, if you recently updated your Galaxy S3 and can't log in... world wide web, then the EFS folder may have been destroyed. That's why you need to do it in advance so that you can easily restore it if necessary. For those who cannot do this, the only solution is to install stock firmware or apply official update, released by Samsung, suitable for S3.
There are many ways to learn how to make an EFS backup, today we will explain the one-click tool option. To do this you will need a computer with Windows control and a USB cable for your phone, since you will need to connect the S3 to your PC. In addition, this procedure requires root access on the smartphone. If they are not there, then first you need to root the device and remove factory restrictions. Please note that rooting automatically voids the warranty. We recommend that you search through our Guides section for a suitable step by step guide, where you can find everything you need to know about the root access operation. Then come back here and continue with the rest of the guide.
Remember that it is recommended to back up all data on your Galaxy S3 (before upgrading or making system changes), not just the EFS folder. It is important to save your personal information as it will likely be destroyed. For a complete backup, you can download SMS Backup & Restore for Android, Call Logs Backup & Restore, sync with Google to save contacts, or use a custom recovery image (like CWM) to backup your current system.
Before performing all the steps, you must disable security tools on your computer and phone, as these programs can interrupt the backup operation by stopping the one-click tool. Next, enable the USB debugging option on the Galaxy S3 (this requirement is present in the steps below) and charge the smartphone battery so that it does not turn off in the middle of the process.
Please note that this guide can and should only be applied to Samsung Galaxy S3 and not to any other android device. This method was first developed and tested by XDA Developers, so we have to thank them for this opportunity. Now, finally, you can follow the appropriate steps. Read everything carefully. The process is simple and will only take a couple of minutes to complete, so let's get started.
How to Make an EFS Backup on Samsung Galaxy S3 Using One-Click Method
- First of all, download Samsung Kies to your computer to install the appropriate drivers for the Samsung Galaxy S3.
- Then download the EFS backup and restore application from here (search for download).
- You should have a file with the extension .rar.
- Unpack the archive.
- The USB debugging option must be enabled on the Galaxy S3. Go to Settings -> Developer and make sure the USB debugging option is checked.
- Now, connect your device to your computer using a USB cable.
- Once the phone is connected, go to the folder where you extracted the downloaded file and click on executable file Backup EFS.
- Follow all steps.
- EFS will be saved to the same folder in .img format.
- If you need to restore EFS, then you need to run Restore_EFS and go through all the steps again.
This was a one-click method that can be used to easily perform EFS backup and restore on Samsung Galaxy S3. Now you can calmly think about upgrading your phone with custom firmware, since your data and EFS are in good hands.
